KR20090093209A - Turn-over device and method for hopper block - Google Patents

Abstract

A turn-over device and method of a hopper block are provided to turn over the hopper block simply without lug and working table for lug removal, thereby reducing the cost. A turn-over device of a hopper block comprises a body portion(101), an anchoring bolt(104), and a handle(105). When a concentrated load is applied from a crane wire and a shackle to the hopper block, the body portion protects the hopper block from damage by dispersing the concentrated load. The anchoring bolt is coupled through the right and left upper parts of the body portion to join the body portion and the hopper block. The handle is protruded in a hook shape from the top of the body portion to help the user carry and transport the body portion.

Description

TURN-OVER DEVICE AND METHOD FOR HOPPER BLOCK}

The present invention relates to the assembly process of the hull in shipbuilding, and more particularly to the turn-over (TURN-OVER) technology of the hopper block (HOPPER BLOCK) of the hull.

In drying the hull, a large number of steel sheets, section steels, and the like are processed, and individual parts are first manufactured, and a part of the hull is enlarged by small and medium assembly on the assembly plate. Subsequently, these parts are arranged and combined on a lined assembly plate to produce a block. The hull is completed by making a block by painting and performing total assembly around the final stage of dock, that is, by combining the block with a large block.

On the other hand, the purpose of the block drying method is to divide the hull on the assembly plate on the ground to reduce the amount of work in the dock as much as possible. It is easy to supervise, ③ It is easy to arrange the appropriate worker, ④ It improves the work environment by improving the working environment, and it is easy to mechanize and automate. ⑤ It can reduce the risk of high place work. ⑥ It can reduce welding deformation and residual stress because of less spot welding. ⑦ It can reduce painting work in dock because block coating is performed.

Blocks are classified into various types according to their size and structure, but are divided into flat blocks and music blocks. In general, a block may be generally considered to be planarly formed by a plate, a girder, a stiffener, or the like. The assembly (large assembly) process consists of arranging plates on a surface plate, arranging girders and stiffeners on it, and performing welding by completing one block. It is called as a contrast process. In recent years, construction of equipments and various tests have also been advanced and carried out on assembly tables.

The weight of the block is increasing with the increase of facilities and the improvement of production technology. In large tankers, 200 ~ 300 tons is common. Depending on the size of the facility, some may exceed 400-500 tons, and the method of drying the super-large block (800 tons) by the total assembly (P.E) process next to the dock is also common.

The ship to be constructed is divided into appropriately shaped blocks in consideration of the facilities and equipments possessed in the design stage and ease of operation. The mounting process refers to the process of making the shape of the ship by stacking the blocks completed through the assembly process in the dock one by one in a certain order. As the capacity of the crane increases, the so-called predecessor, which becomes larger in size and proceeds with the design work in addition to the mounting work, or constructs a part of it as part of the hull construction work. Is gradually increasing.

Meanwhile, in order for the individually manufactured blocks to be transferred to the mounting process, a process of transferring or turning over the manufactured blocks is required. The turn-over process of the block involves attaching two or more lugs to the outer shell or frame of the block, connecting the wires to each lug, and pulling the wires upwards using two or more cranes, respectively. It is performed while inverting the block while descending (see FIG. 2).

In recent years, in the shipbuilding industry, the block weight is increasing due to the larger size of the block. Therefore, special care must be taken in selecting and attaching the lug positions necessary for the removal, turn-over and mounting of the block. However, these lugs are ultimately removed and require a lot of man-hours and materials to attach and detach, so the attachment and detachment of such lugs is itself a cause of cost increase. Works. In addition, in order to remove the lug attached to the block by welding, heat must be applied to the block again. In this process, heat deformation of the block may occur, resulting in deterioration of the overall quality.

In particular, in the case of the hopper block (HOPPER BLOCK) it is very difficult to remove the lug after turning the hopper block. That is, as shown in Fig. 2, due to the shape of the hopper block, the lug attached to the turned-over hopper block is located at a high place about 4 to 5 meters above the maximum ground. A ”. In the present invention, the position of this part is referred to as the“ top end of the hopper block ”. Therefore, in order to remove the lug, a scaffold work platform for removing the lug must be separately installed on the outer surface of the shell of the hopper block. In addition to the additional cost loss (generally the lug at “A” is attached to the shell of the hopper block by welding), there is also a problem that the operator must bear the risk of injury due to heights.

The present invention has been proposed to solve the above problems, the jig and turn-over method of the hopper block using the same that can turn over the hopper block in a simple manner without using a separate lug and scaffolding platform for removing the lug The purpose is to provide.

Other objects and advantages of the present invention will be described below, which are not limited to the matters set forth in the claims and the disclosure of the embodiments thereof, but also to the broader ranges by means and combinations within the range readily recited therefrom. Add that it will be included.

In order to achieve the above object, the present invention is a structure having a vertical cross section of the body in the shape of an inverted diaphragm and in the form of a rectangular parallelepiped extending in the horizontal direction as a whole. Since the SHELL insertion groove 102 extending in the horizontal direction so as to fit into the shell of the frame and the FRAME insertion groove 103 extending in the longitudinal direction so as to fit into the frame of the hopper block are formed while crossing each other vertically, the hopper It prevents damage to the hopper block by accepting the concentrated load applied to the hopper block from the ACK block combined with the wire and the wire of the crane in the state of being fitted to the shell and frame of the hopper block when the block is turned over. Body portion 101; It is fastened through the upper left and right upper surface of the body portion 101, respectively, so that the body portion 101 and the hopper block to each other so that the body portion 101 is not easily separated from the hopper block in the state fitted to the hopper block Fastening bolt 104 to be bound; And a protrusion 105 protruding in an annular shape from the center of the upper surface of the body portion 101 to allow an operator to easily carry or transport the body portion 101. (100) is presented.

In addition, the present invention comprises the step of forming a LIFTING HOLE in the FRAME located at the upper end of the hopper block (S201); Inserting the turn-over jig 100 of the hopper block into SHELL and FRAME of the hopper block (S202); Fastening the fixing bolt 104 to bind the turn-over jig 100 and the hopper block of the hopper block to each other (S203); Filling SHACKLE (C) in the LIFTING HOLE formed in step S201 (S204); Filling the SHACKLE (D) to which the wire of the crane is connected to the SHACKLE (C) filled in the step S204 (S205); Step S206 of the crane LIFTING the wire to turn over the hopper block; Releasing the fixing bolt 104 and removing the turn-over jig 100 of the hopper block from the hopper block (S207); And a turn-over method using the turn-over fixture 100 of the hopper block including the step of dismantling the SHACKLE (D) and the SHACKLE (C).

According to the present invention, since it is not necessary to use the lug during the turn-over operation of the hopper block, it is possible to reduce costs such as labor costs and material costs required for the installation and removal of the lug. In particular, in the case of the upper end of the hopper block, there is no need to install a separate platform for removing the lug used in the prior art, which can reduce the additional cost, and can also be freed from the risk of injury due to the worker's height. That a beneficial effect occurs.

Other effects of the present invention, as well as those described in the above-described embodiments and claims of the present invention, as well as potential effects that may occur within the range that can be easily estimated therefrom and potential advantages that contribute to industrial development It will be added that it will be covered by a wider scope.

1 shows a hopper block turn-over fixture according to a preferred embodiment of the present invention.

2 illustrates a process of turning over a hopper block using a lug (LUG).

3 illustrates a process of turning over a hopper block using a hopper block turn-over jig according to the present invention.

4 is a view illustrating an embodiment in which a hopper block turn-over jig according to the present invention is applied to a hopper block, and corresponds to a detailed view of part “B” of FIG. 3.

5 illustrates an embodiment in which a hopper block turn-over jig according to the present invention is applied to a hopper block.

<Description of Major Symbols in Drawing>

100: Hopper block turn-over jig

101: body

102: SHELL Insertion Groove

103: Frame Insert Groove

104: fixing bolt

105: handle

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible, even if shown on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the following will describe a preferred embodiment of the present invention, but the technical idea of the present invention is not limited thereto and may be variously modified and modified by those skilled in the art.

1 shows a hopper block turn-over fixture 100 in accordance with the present invention. The turn-over jig 100 of the hopper block includes a body portion 101, a fixing bolt 104, and a handle 105.

The body portion 101 is a structure having a longitudinal cross section of the body having a shape of an inverted diaphragm and a rectangular parallelepiped extending in the horizontal direction as a whole.

In the middle of the body portion 101, the SHELL insertion groove 102 extending in the horizontal direction to be fitted to the shell of the hopper block and the FRAME insertion groove 103 extending in the longitudinal direction so as to fit into the frame of the hopper block. These are formed while crossing each other perpendicularly.

The reason why the SHELL insertion groove 102 and the FRAME insertion groove 103 are vertically intersected with each other is that the operator firmly fixes the hopper block turn-over jig 100 to the SHELL of the hopper block during the turn-over operation of the hopper block. It is to be able to insert. That is, since the hopper block forms a structure in which a plurality of FRAMEs (reinforcement materials) are vertically coupled to the SHELL (shell plate), in order to firmly fit the hopper block turn-over fixture 100 to the SHELL of the hopper block. It is necessary to have a groove that can accommodate the vertical coupling structure between the shell and the frame. 5, the state in which the hopper block turn-over jig 100 is firmly fitted to the hopper block can be confirmed at a glance.

At this time, the width of the SHELL insertion groove 102 and the FRAME insertion groove 103 should be at least greater than the thickness of the SHELL and FRAME of the hopper block. If the width of the SHELL insertion groove 102 and the FRAME insertion groove 103 is smaller than any one of the thicknesses of the SHELL and FRAME of the hopper block, the hopper block turn-over jig 100 cannot be properly fitted into the hopper block. do.

On the contrary, if the width of the SHELL insertion groove 102 and the FRAME insertion groove 103 is larger than the thickness of the SHELL and FRAME of the hopper block, the hopper block turn-over fixture 100 can be easily fitted to the hopper block but again. There is also a risk of being easily separated from the hopper block.

Therefore, in order to prepare for such a case, the fixing bolt 104 is introduced into the body portion 101. Fixing bolt 104 is fastened through each of the upper left and upper right surface of the body portion 101, the body portion 101 and the hopper so that the body portion 101 is not easily separated from the hopper block in the state fitted to the hopper block It binds blocks together.

The body portion 101 is coupled to the wire and the wire of the crane in the state of being fitted to the SHELL and FRAME of the hopper block (particularly, the upper end of the hopper block. "B" in Fig. 3) during the turn-over of the hopper block It receives the concentrated load applied to the hopper block from (D) and converts it into the distribution load, thereby preventing damage to the hopper block (see FIG. 4). In this case, the fixing bolt 104 serves to support the body portion 101 from being shaken or separated from the hopper block by the concentrated load applied from the SHACKLE (D) coupled with the wire and the wire of the crane. As a result, even after the turn-over, the quality of the hopper block may be maintained without being degraded.

The handle 105 is protruded in a ring shape from the center of the upper surface of the body portion 101, so that the operator can easily carry or transport the hopper block turn-over jig 100 including the body portion 101 (See FIG. 1).

Meanwhile, the hopper block turn-over jig 100 according to the present invention is not a method of turning over a hopper block using a lug as in the conventional case, but a method of turning the hopper block using a LIFTING HOLE. Technical effects will occur.

That is, the ultimate object of the present invention is to propose an effective way to turn over a hopper block without using a lug in order to solve the conventional problem occurred when the hopper block is turned over using a lug. In order to turn over the hopper block without using lugs like this, LIFTING HOLE for LIFTING the hopper block must be introduced by crane. It is inevitable that the hopper block may be damaged by the concentrated load applied to the hopper block in the process (see FIG. 4). As a method for effectively eliminating this problem, the present invention provides a hopper block turn-over jig ( 100).

A method (process) for turning over a hopper block using the hopper block turn-over jig 100 will be described below in order.

S201: LIFTING HOLE is formed in FRAME (“B” of FIG. 3) located at the upper end of the hopper block (see FIG. 4 or FIG. 5). Such LIFTING HOLE is preferably formed in FRAME before the block assembly step.

S202: Insert the turn-over jig 100 of the hopper block to SHELL and FRAME of the hopper block (see Fig. 4 or 5).

S203: The fixing bolt 104 is tightened to bind the turn-over jig 100 and the hopper block of the hopper block to each other (see FIG. 4 or FIG. 5).

S204: Fill the SHACKLE (C) in the LIFTING HOLE formed in step S201 (see Fig. 5).

S205: Fill the SHACKLE (C) connected to the SHACKLE (C) filled in the step S204 (see Fig. 4).

S206: The crane LIFTING the wire turns the hopper block over (see FIGS. 3 and 4).

S207: Loosen the fixing bolt 104, and remove the turn-over jig 100 of the hopper block from the hopper block.

S208: Disassemble the SHACKLE (D) and SHACKLE (C).

According to this process, since it is not necessary to use the lug during the turn-over operation of the hopper block, it is possible to reduce costs such as labor costs and material costs required for the installation and removal of the lug. In particular, in the case of the upper end of the hopper block, there is no need to install a separate platform for removing the lug used in the prior art, which can reduce the additional cost, and can also be freed from the risk of injury due to the worker's height. That a beneficial effect occurs.

The above description is merely illustrative of the technical idea of the present invention, and various modifications, changes, and substitutions may be made by those skilled in the art without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. . The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

Claims (2)

The vertical cross section of the body has the shape of reversed inverted shape and has a rectangular parallelepiped shape that extends in the horizontal direction as a whole, and is long in the horizontal direction so that it can be fitted to the shell of the hopper block in the center of the rectangular shaped body. The extended SHELL insertion groove 102 and the FRAME insertion groove 103 extending in the longitudinal direction to be fitted to the frame of the hopper block are formed while crossing perpendicularly to each other, so that the SHELL and the hopper block at the turn-over of the hopper block. Body portion 101 which serves to prevent damage to the hopper block by receiving the concentrated load applied to the hopper block from the SHACKLE coupled to the wire of the crane in the state fitted to the FRAME to the distribution load; It is fastened through the upper left and right upper surface of the body portion 101, respectively, so that the body portion 101 and the hopper block to each other so that the body portion 101 is not easily separated from the hopper block in the state fitted to the hopper block Fastening bolt 104 to be bound; And Protruding from the center of the upper surface of the body portion 101 in a ring shape, the handle 105 to enable the operator to easily carry or transport the body portion 101 Turn-over jig of the hopper block comprising a. A turn-over method using the turn-over jig 100 of the hopper block according to claim 1, Forming a LIFTING HOLE on a FRAME located at an upper end of the hopper block (S201); Inserting the turn-over jig 100 of the hopper block into SHELL and FRAME of the hopper block (S202); Fastening the fixing bolt 104 to bind the turn-over jig 100 and the hopper block of the hopper block to each other (S203); Filling SHACKLE (C) in the LIFTING HOLE formed in step S201 (S204); Filling the SHACKLE (D) to which the wire of the crane is connected to the SHACKLE (C) filled in the step S204 (S205); The crane LIFTING the wire to turn over the hopper block (S206); Releasing the fixing bolt 104 and removing the turn-over jig 100 of the hopper block from the hopper block (S207); And Disassembling the SHACKLE (D) and SHACKLE (C) (S208) Turn-over method using a turn-over jig (100) of the hopper block comprising a.